Return-Path: Received: from rly-dg07.mx.aol.com (rly-dg07.mail.aol.com [172.19.151.91]) by air-dg08.mail.aol.com (v126.13) with ESMTP id MAILINDG084-5de4b60b5f618b; Wed, 27 Jan 2010 16:54:33 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-dg07.mx.aol.com (v125.7) with ESMTP id MAILRELAYINDG077-5de4b60b5f618b; Wed, 27 Jan 2010 16:54:00 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1NaFp5-00068s-3b for rs_out_1@blacksheep.org; Wed, 27 Jan 2010 21:53:15 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1NaFp4-00068i-DW for rsgb_lf_group@blacksheep.org; Wed, 27 Jan 2010 21:53:14 +0000 Received: from mtaout01-winn.ispmail.ntl.com ([81.103.221.47]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1NaFp3-0007Iw-6F for rsgb_lf_group@blacksheep.org; Wed, 27 Jan 2010 21:53:14 +0000 Received: from know-smtpout-1.server.virginmedia.net ([62.254.123.1]) by mtaout01-winn.ispmail.ntl.com (InterMail vM.7.08.04.00 201-2186-134-20080326) with ESMTP id <20100127215305.HVXT4204.mtaout01-winn.ispmail.ntl.com@know-smtpout-1.server.virginmedia.net> for ; Wed, 27 Jan 2010 21:53:05 +0000 Received: from [86.27.135.186] (helo=desktop) by know-smtpout-1.server.virginmedia.net with esmtp (Exim 4.63) (envelope-from ) id 1NaFou-0005VN-To for rsgb_lf_group@blacksheep.org; Wed, 27 Jan 2010 21:53:05 +0000 From: "James Cowburn" To: References: <1f0624b91001271133g22391461tfa8dc9a87c8f14d4@mail.gmail.com> <1f0624b91001271303v1eb7094bp659dba8418585e81@mail.gmail.com> <007f01ca9f96$fbf9bfc0$0217aac0@desktop> <1f0624b91001271344i7d681c40oeb6374d267ba7955@mail.gmail.com> Date: Wed, 27 Jan 2010 21:53:00 -0000 Message-ID: <00a101ca9f9b$182cb1d0$0217aac0@desktop> MIME-Version: 1.0 X-Mailer: Microsoft Office Outlook 11 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3350 In-Reply-To: <1f0624b91001271344i7d681c40oeb6374d267ba7955@mail.gmail.com> thread-index: AcqfmgO9+nPR1f5wQnmF7NNq3hqivQAAHPlg X-Cloudmark-Analysis: v=1.1 cv=W3tOLUehizD4qj6VhtReFuw5MKb8d+XqjIxlDsIazEA= c=1 sm=0 a=F3M5lZpKAAAA:8 a=8RloEfZUAAAA:8 a=mK_AVkanAAAA:8 a=wV9FcBFsAAAA:8 a=FcAFIstCAAAA:8 a=rAh2LSg9fjRDHveUXkMA:9 a=6bw9joUT2o-qJvEoFx0A:7 a=H7rHMA_-BhIc92t-rRFFaZ_Q8w4A:4 a=KGHlO6L4b5AA:10 a=wk6s2zzMB60A:10 a=O58u2wXj750A:10 a=9xyTavCNlvEA:10 a=NV0LgFqsyRYA:10 a=36S4FZIGIzrOm8Vz:21 a=DaKEW6D8KZ9ZX_lP:21 a=SSmOFEACAAAA:8 a=87olYQBfMnBlasYZDUkA:9 a=sz8JjHFNnm_DB1xXGqIA:7 a=xx0AFF6eXITVTlJdEN4xMfNtLhEA:4 a=mftO4deV2_QA:10 a=HpAAvcLHHh0Zw7uRqdWCyQ==:117 X-Spam-Score: 0.3 (/) X-Spam-Report: autolearn=disabled,HTML_FONT_BIG=0.256,HTML_MESSAGE=0.001 Subject: RE: LF: RE: 500 kHz JT4A Content-Type: multipart/alternative; boundary="----=_NextPart_000_00A2_01CA9F9B.182CB1D0" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.5 required=5.0 tests=EXCUSE_16,HTML_60_70, HTML_FONTCOLOR_UNKNOWN,HTML_FONT_BIG,HTML_MESSAGE autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-AOL-IP: 193.82.116.20 ------=_NextPart_000_00A2_01CA9F9B.182CB1D0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Will do! I am getting several decodes of your "G4WGT QRZ" call all at around -15dB. There is another occasional signal on evens but not decoding I am running 10W from ICOM 706 mk2G into inverted L (6m vertical and 30m top hat). I am assuming (ex Vertload/Tophat2) around 0.5% to 1% eff so ERP between 50mw and 100mW. With best regards Jim From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of Gary - G4WGT Sent: 27 January 2010 21:44 To: rsgb_lf_group@blacksheep.org Subject: Re: LF: RE: 500 kHz JT4A Jim, Thanks, getting a weak very trace & the decoder is indicating a signal sync but hardly visible, please keep trying, QSB may bring you up. Gary - G4WGT. 2010/1/27 James Cowburn Hi Gary Just got two decodes of you at -12dB and -15dB 2116 and 2118. I have replied with my call and locator on odd minute txing With best regards Jim Dr. James Cowburn E james.cowburn@virgin.net The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you are not the intended recipient, you are hereby notified that you must not read this message. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. Consequently, this email is not intended to be contractually binding. If you received this in error, please contact the sender, return the message as well as its attachments and delete the whole from any computer. _____ From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of Gary - G4WGT Sent: 27 January 2010 21:03 To: rsgb_lf_group@blacksheep.org Subject: Re: LF: RE: 500 kHz JT4A Rik, & Andy, Thanks for your report & comments & Andy for answering Rik's query. Well there has not been any response to my CQ call so I will change the text to beacon & continue to see if there is a report from further afield. If you want to try for a weak decode I can reduce the power for a short period say 30 minutes, my power is 50 watt RF (200 mW ERP) at the moment so in view of your good report I could take it down to 10 watts RF. Let me know. 73, Gary - G4WGT - IO83qo 2010/1/27 Andy Talbot -24dB S/N (2.5kHz ) is usually guaranteed Andy www.g4jnt.com This email has been scanned for damaging side-effects by the health and safety police, is guaranteed to contain no substances hazardous to health, but may contribute to dissolving the nether and polar regions 2010/1/27 Rik Strobbe Gary, solid copy here, SNR -5 to -7dB. But the signal is clearly audible, CW would be armchair copy. Any idea down to what SNR values JT4A produces a usable decoding ? 73, Rik ON7YD - OR7T _____ Van: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.org] namens Gary - G4WGT [g4wgt@tiscali.co.uk] Verzonden: woensdag 27 januari 2010 20:33 Aan: Rsgb_Lf_Group Onderwerp: LF: 500 kHz JT4A LF, Running JT4A this evening on 503.600 kHz, dial frequency 502.300 kHz USB. 73, Gary - G4WGT - IO83qo ------=_NextPart_000_00A2_01CA9F9B.182CB1D0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Will do! &= nbsp; I am getting several decodes of your “G4WGT QRZ” call all at around -15dB. &nbs= p; There is another occasional signal on evens but not decoding

 

I am running 10= W from ICOM 706 mk2G into inverted L (6m vertical and 30m top hat).    I am assum= ing (ex Vertload/Tophat2) around  0.5% to 1% eff so ERP between 50mw and= 100mW.

 

 

With best regards=

 

Jim

 

From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksh= eep.org] On Behalf Of G= ary - G4WGT
Sent: 27 January 2010= 21:44
To: rsgb_lf_group@black= sheep.org
Subject: Re: LF: RE: 50= 0 kHz JT4A

 

Jim,

 

Thanks, getting a weak very trace & the= decoder is indicating a signal sync but hardly visible, please keep trying, QSB may bring you= up.

 

Gary - G4WGT.

 

2010/1/27 James Cowburn <james.cowburn@virgin.net>=

Hi Gary

 

Just got two decodes of= you at -12dB and -15dB 2116 and 2118.

 

I have replied with my= call and locator on odd minute txing

With best regards=

 

Jim

 Dr.= James Cowburn

E james.cowburn@virgin.net

 =

The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you are not the intended recipient, you are he= reby notified that you must not read this message.
Any review, retransmission, dissemination or other use of, or taking= of any action in reliance upon, this information by persons or entities other= than the intended recipient is prohibited.  Consequently, this email is no= t intended to be contractually binding.
If you received this in error, please contact the sender, return the= message as well as its attachments and delete the whole from any computer.=

From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsg= b_lf_group@blacksheep.org] On Behalf Of Gary - G4W= GT
Sent: 27 January 2010= 21:03
To: rsgb_lf_group@blackshee= p.org
Subject: Re: LF: RE: 50= 0 kHz JT4A

 

Rik, & Andy,

 

Thanks for your report & comments & Andy for answering Rik's query.=

 

Well there has not been any response to my CQ call so I will change the text to beacon &a= mp; continue to see if there is a report from further afield.

 

If you want to try for a weak decode I can reduce the power for a short period say 30 min= utes, my power is 50 watt RF (200 mW ERP) at the moment so in view of your good= report I could take it down to 10 watts RF.

 

Let me know.

 

73, Gary - G4WGT - IO83qo

2010/1/27 Andy Talbot <andy.g4jnt@googlemail.com>

-24dB S/N (2.5kHz )  is usually guaranteed


Andy
www.g4jnt.com
This email has been scanned for damaging side-effects by the health an= d safety police, is guaranteed to contain no substances hazardous to health, bu= t may contribute to dissolving the nether and polar regions

2010/1/27 Rik Strobbe <Rik.Strobbe@fys.kuleuven.be>

 

Gary,

 

solid copy here, SNR -5 to -7dB.

But the signal is clearly audible, CW would be armchair copy.

Any idea down to what SNR values JT4A produces a usable decoding ?

 

73, Rik  ON7YD - OR7T

Van:Verzonden: woensdag 27= januari 2010 20:33
Aan: Rsgb_Lf_Group
Onderwerp: LF: 500 kHz= JT4A

LF,

 

Running JT4A this evening on 503.600 kHz, dial frequency 502.300 kHz USB.

 

73, Gary - G4WGT - IO83qo

 

 

 

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